2x21 spaces side by side Rails front and back both sides Front and back removable covers Built by Muti-Caisses Excellent shape, all latches work smoothly, etc. 4" casters, front casters lock 42"w X 30.25"d X 40"h + 5" for casters 21" front rail to back rail $400/offers or trade for smaller rack case. Can deliver, even!